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Diffstat (limited to 'node_modules/axios/lib/utils.js')
-rw-r--r-- | node_modules/axios/lib/utils.js | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/node_modules/axios/lib/utils.js b/node_modules/axios/lib/utils.js new file mode 100644 index 0000000..f0f9043 --- /dev/null +++ b/node_modules/axios/lib/utils.js @@ -0,0 +1,349 @@ +'use strict'; + +var bind = require('./helpers/bind'); + +// utils is a library of generic helper functions non-specific to axios + +var toString = Object.prototype.toString; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an Array, otherwise false + */ +function isArray(val) { + return Array.isArray(val); +} + +/** + * Determine if a value is undefined + * + * @param {Object} val The value to test + * @returns {boolean} True if the value is undefined, otherwise false + */ +function isUndefined(val) { + return typeof val === 'undefined'; +} + +/** + * Determine if a value is a Buffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Buffer, otherwise false + */ +function isBuffer(val) { + return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) + && typeof val.constructor.isBuffer === 'function' && val.constructor.isBuffer(val); +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +function isArrayBuffer(val) { + return toString.call(val) === '[object ArrayBuffer]'; +} + +/** + * Determine if a value is a FormData + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an FormData, otherwise false + */ +function isFormData(val) { + return toString.call(val) === '[object FormData]'; +} + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + var result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (isArrayBuffer(val.buffer)); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a String, otherwise false + */ +function isString(val) { + return typeof val === 'string'; +} + +/** + * Determine if a value is a Number + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Number, otherwise false + */ +function isNumber(val) { + return typeof val === 'number'; +} + +/** + * Determine if a value is an Object + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an Object, otherwise false + */ +function isObject(val) { + return val !== null && typeof val === 'object'; +} + +/** + * Determine if a value is a plain Object + * + * @param {Object} val The value to test + * @return {boolean} True if value is a plain Object, otherwise false + */ +function isPlainObject(val) { + if (toString.call(val) !== '[object Object]') { + return false; + } + + var prototype = Object.getPrototypeOf(val); + return prototype === null || prototype === Object.prototype; +} + +/** + * Determine if a value is a Date + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Date, otherwise false + */ +function isDate(val) { + return toString.call(val) === '[object Date]'; +} + +/** + * Determine if a value is a File + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a File, otherwise false + */ +function isFile(val) { + return toString.call(val) === '[object File]'; +} + +/** + * Determine if a value is a Blob + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Blob, otherwise false + */ +function isBlob(val) { + return toString.call(val) === '[object Blob]'; +} + +/** + * Determine if a value is a Function + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +function isFunction(val) { + return toString.call(val) === '[object Function]'; +} + +/** + * Determine if a value is a Stream + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Stream, otherwise false + */ +function isStream(val) { + return isObject(val) && isFunction(val.pipe); +} + +/** + * Determine if a value is a URLSearchParams object + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +function isURLSearchParams(val) { + return toString.call(val) === '[object URLSearchParams]'; +} + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * @returns {String} The String freed of excess whitespace + */ +function trim(str) { + return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, ''); +} + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + */ +function isStandardBrowserEnv() { + if (typeof navigator !== 'undefined' && (navigator.product === 'ReactNative' || + navigator.product === 'NativeScript' || + navigator.product === 'NS')) { + return false; + } + return ( + typeof window !== 'undefined' && + typeof document !== 'undefined' + ); +} + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + */ +function forEach(obj, fn) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (var i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + for (var key in obj) { + if (Object.prototype.hasOwnProperty.call(obj, key)) { + fn.call(null, obj[key], key, obj); + } + } + } +} + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + var result = {}; + function assignValue(val, key) { + if (isPlainObject(result[key]) && isPlainObject(val)) { + result[key] = merge(result[key], val); + } else if (isPlainObject(val)) { + result[key] = merge({}, val); + } else if (isArray(val)) { + result[key] = val.slice(); + } else { + result[key] = val; + } + } + + for (var i = 0, l = arguments.length; i < l; i++) { + forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * @return {Object} The resulting value of object a + */ +function extend(a, b, thisArg) { + forEach(b, function assignValue(val, key) { + if (thisArg && typeof val === 'function') { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }); + return a; +} + +/** + * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) + * + * @param {string} content with BOM + * @return {string} content value without BOM + */ +function stripBOM(content) { + if (content.charCodeAt(0) === 0xFEFF) { + content = content.slice(1); + } + return content; +} + +module.exports = { + isArray: isArray, + isArrayBuffer: isArrayBuffer, + isBuffer: isBuffer, + isFormData: isFormData, + isArrayBufferView: isArrayBufferView, + isString: isString, + isNumber: isNumber, + isObject: isObject, + isPlainObject: isPlainObject, + isUndefined: isUndefined, + isDate: isDate, + isFile: isFile, + isBlob: isBlob, + isFunction: isFunction, + isStream: isStream, + isURLSearchParams: isURLSearchParams, + isStandardBrowserEnv: isStandardBrowserEnv, + forEach: forEach, + merge: merge, + extend: extend, + trim: trim, + stripBOM: stripBOM +}; |